Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eee6b06a08c92f1…

MALICIOUS

PDF

75.0 KB Created: 2020-12-28 18:15:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4cebf2f0787afe548bcf5761dbd0718c SHA-1: 91067356d8b17ce4a99fd3be62f664deef6d2c1f SHA-256: 7eee6b06a08c92f12bc0ac9f68e4ce1d567e1512f94c2c42d8c370573915d63f
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, with a critical heuristic identifying it as a PDF link farm. One prominent URL, 'https://traffine.ru/strik?utm_term=descargar+smashing+rush+parkour+action+run+game', suggests a lure to download a game. The ClamAV detection and ML classifier strongly indicate maliciousness, likely related to phishing or a scam. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffine.ru/strik?utm_term=descargar+smashing+rush+parkour+action+run+game PDF link annotation
    • https://nosisakapu.weebly.com/uploads/1/3/4/7/134773138/4563893.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369900/normal_5f9b543ac6f78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381318/normal_5fcfb7e6553b1.pdfIn PDF document text
    • https://vijisazegogufob.weebly.com/uploads/1/3/1/3/131380966/xonol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386622/normal_5f94d88e15c3e.pdfIn PDF document text
    • https://pojekemo.weebly.com/uploads/1/3/4/4/134469054/relada.pdfIn PDF document text
    • https://welavomuwaj.weebly.com/uploads/1/3/4/6/134633166/7494613.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469634/normal_5fab4fe99e9ca.pdfIn PDF document text
    • https://jefapijuwenumik.weebly.com/uploads/1/3/4/4/134435530/2c80ecbaf6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/jelaskan_mengapa_akuntansi_disebut_sebagai_sistem_informasi.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/continuous_broaching_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/how_to_fix_a_swingline_stapler.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/farmacologia_de_los_aines.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/pltw_computer_science_2._1._1_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3526e813-57f7-4d3f-8ae2-15180a79b27e/fumimaze.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA4 5260 bytes
SHA-256: e7290f7f77618af25c876700b358881c860cad6fa53a929550531e9b725a699f
font_01_sfnt_off0000ed5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED5D 10596 bytes
SHA-256: 23cf16c87f196d0fa5881db2fef84ebac7701b449be97e1997c300bad5382755
font_02_sfnt_off000110f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110F8 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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